轴子场对约瑟夫森结准势的影响。

Axion Field Influence on Josephson Junction Quasipotential.

作者信息

Grimaudo Roberto, Valenti Davide, Spagnolo Bernardo, Troisi Antonio, Filatrella Giovanni, Guarcello Claudio

机构信息

Dipartimento di Fisica e Chimica "E. Segrè", Group of Theoretical Interdisciplinary Physics, Università degli Studi di Palermo, Viale delle Scienze, Ed. 18, 90128 Palermo, Italy.

Radiophysics Department, Lobachevskii State University of Nizhnii Novgorod, 23 Gagarin Ave., Nizhnii Novgorod 603950, Russia.

出版信息

Materials (Basel). 2023 Aug 31;16(17):5972. doi: 10.3390/ma16175972.

DOI:10.3390/ma16175972

PMID:37687664

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10488603/

Abstract

The direct effect of an axion field on Josephson junctions is analyzed through the consequences on the effective potential barrier that prevents the junction from switching from the superconducting to the finite-voltage state. We describe a method to reliably compute the quasipotential with stochastic simulations, which allows for the spanning of the coupling parameter from weakly interacting axion to tight interactions. As a result, we obtain an axion field that induces a change in the potential barrier, therefore determining a significant detectable effect for such a kind of elusive particle.

摘要

通过分析轴子场对有效势垒的影响，研究了轴子场对约瑟夫森结的直接作用，该势垒阻止结从超导态转变为有限电压态。我们描述了一种通过随机模拟可靠计算准势的方法，该方法允许耦合参数从弱相互作用轴子跨越到紧密相互作用。结果，我们得到了一个能引起势垒变化的轴子场，从而确定了这种难以捉摸的粒子的显著可探测效应。